IBM Thinkpad T40 Hardware Maintenance Manual page 126

Removing and replacing a FRU
Step Screw (quantity)
5
M2 × 10 mm, flat-head,
nylon-coated (1)
(continued)
120
T40/T40p, T41/T41p, T42/T42p
5
Color Torque
Black 0.245 Nm
(2.5 kgfcm)